checkpoint: add remove command, may be incomplete (it has been a while)

cmd/enbas/remove.go

@@ -0,0 +1,72 @@
+package main
+
+import (
+	"errors"
+	"flag"
+	"fmt"
+
+	"codeflow.dananglin.me.uk/apollo/enbas/internal/client"
+)
+
+type removeCommand struct {
+	*flag.FlagSet
+
+	fromResourceType string
+	listID           string
+	accountIDs       accountIDs
+}
+
+func newRemoveCommand(name, summary string) *removeCommand {
+	emptyArr := make([]string, 0, 3)
+
+	command := removeCommand{
+		FlagSet:    flag.NewFlagSet(name, flag.ExitOnError),
+		accountIDs: accountIDs(emptyArr),
+	}
+
+	command.StringVar(&command.fromResourceType, "remove-from", "", "specify the type of resource to remove from")
+	command.StringVar(&command.listID, listIDFlag, "", "the ID of the list to remove from")
+	command.Var(&command.accountIDs, "account-id", "the ID of the account to remove from the list")
+
+	command.Usage = commandUsageFunc(name, summary, command.FlagSet)
+
+	return &command
+}
+
+func (c *removeCommand) Execute() error {
+	if c.fromResourceType == "" {
+		return flagNotSetError{flagText: "remove-from"}
+	}
+
+	funcMap := map[string]func(*client.Client) error{
+		listResource: c.removeAccountsFromList,
+	}
+
+	doFunc, ok := funcMap[c.fromResourceType]
+	if !ok {
+		return unsupportedResourceTypeError{resourceType: c.fromResourceType}
+	}
+
+	gtsClient, err := client.NewClientFromConfig()
+	if err != nil {
+		return fmt.Errorf("unable to create the GoToSocial client; %w", err)
+	}
+
+	return doFunc(gtsClient)
+}
+
+func (c *removeCommand) removeAccountsFromList(gtsClient *client.Client) error {
+	if c.listID == "" {
+		return flagNotSetError{flagText: listIDFlag}
+	}
+
+	if len(c.accountIDs) == 0 {
+		return errors.New("no account IDs has been specified")
+	}
+
+	if err := gtsClient.RemoveAccountsFromList(c.listID, []string(c.accountIDs)); err != nil {
+		return fmt.Errorf("unable to remove the accounts from the list; %w", err)
+	}
+
+	return nil
+}